Indoleamine 2,3-dioxygenase 1 (IDO1) activity links to immune escape of cancers. Inhibition of IDO1 provides a new approach for cancer treatment. Most clinical IDO1 drugs show marginal efficacy as single agents.
Guangwei Xu +8 more
doaj +3 more sources
Phase I Study of the Indoleamine 2,3-Dioxygenase 1 (IDO1) Inhibitor Navoximod (GDC-0919) Administered with PD-L1 Inhibitor (Atezolizumab) in Advanced Solid Tumors. [PDF]
Purpose: IDO1 induces immune suppression in T cells through l-tryptophan (Trp) depletion and kynurenine (Kyn) accumulation in the local tumor microenvironment, suppressing effector T cells and hyperactivating regulatory T cells (Treg).
Jung KH +26 more
europepmc +3 more sources
Fragment-based approach to identify IDO1 inhibitor building blocks [PDF]
Indoleamine 2,3-dioxygenase 1 (IDO1) is attracting a great deal of interest as drug target in immune-oncology being highly expressed in cancer cells and participating to the tumor immune-editing process.
Ursula Grohmann +2 more
exaly +3 more sources
Structure-based optimization of type III indoleamine 2,3-dioxygenase 1 (IDO1) inhibitors
The haem enzyme indoleamine 2,3-dioxygenase 1 (IDO1) catalyses the rate-limiting step in the kynurenine pathway of tryptophan metabolism and plays an essential role in immunity, neuronal function, and ageing. Expression of IDO1 in cancer cells results in
Ute F. Röhrig +11 more
doaj +3 more sources
Discovery of Novel 1,2,3-triazole Derivatives as IDO1 Inhibitors
Indoleamine 2,3-dioxygenase 1 (IDO1) has received much attention as an immunomodulatory enzyme in the field of cancer immunotherapy. While several IDO1 inhibitors have entered clinical trials, there are currently no IDO1 inhibitor drugs on the market. To
Xixi Hou +4 more
doaj +2 more sources
A Novel IDO1/NE Dual Inhibitor, IMM-H018 Prevents the Primary and Secondary Sepsis and Ameliorates the Kidney Injury Through Inhibiting the Cytokine Storm and Microthrombosis, and Reversing Immunosuppression. [PDF]
IMM‐H018, a dual IDO1/NE inhibitor, demonstrates potent therapeutic efficacy in sepsis by simultaneously targeting excessive inflammation and immune dysfunction. It prevents both primary and secondary sepsis through anti‐inflammatory, immune‐restoring, and renoprotective mechanisms, reducing organ damage, improving immune homeostasis, preserving kidney
Zhou Y +11 more
europepmc +2 more sources
Background The impact of non-small cell lung cancer (NSCLC) metabolism on the immune microenvironment is not well understood within platinum resistance.
Chunjing Wu +11 more
doaj +2 more sources
A data-centric medicinal chemistry approach led to the invention of a potent and selective IDO1 inhibitor 4f, INCB24360 (epacadostat). The molecular structure of INCB24360 contains several previously unknown or underutilized functional groups in drug ...
Peggy Scherle +2 more
exaly +2 more sources
A selective IDO1 inhibitor, KHK2455, improves efficacy of PD-L1 blockade by modulating both innate and adaptive immunity in a mouse melanoma model [PDF]
Indoleamine 2,3-dioxygenase 1 (IDO1) facilitates tumor progression by catabolizing tryptophan into kynurenine (Kyn). While KHK2455, a selective IDO1 inhibitor, reduced Kyn levels in mouse tumors and plasma, it did not exert the expected antitumor ...
Masato Saito +6 more
doaj +2 more sources
The catalytic inhibitor epacadostat can affect the non-enzymatic function of IDO1
Indoleamine 2,3-dioxygenase 1 (IDO1) is a tryptophan metabolizing enzyme chronically activated in many cancer patients and its expression and activity correlate with a poor prognosis.
Maria Laura Belladonna +2 more
exaly +2 more sources

